Hello,
A number of weeks ago I posted a question regarding the use of
inclinometers. I have included my original posting and the replies for
anyone interested. My thanks to those that replied. All responses were
very helpful and much appreciated. Although inclinometers conceptually seem
to be an ideal analysis tool, it appears that their use still has some
limitations in the subject movements allowed.
Again, thank you for your time.
Michael
--------------------------------------------------------------------------------
I am looking into the use of inclinometer transducers to obtain absolute and
relative angles (shoulder and wrist, respectively) measured in an industrial
work place setting. The aim of this setup is to remove constraints on
subject motions and the effect of different work environments (ie. field of
view limitations, environmental interference, etc.). My search of the
literature has found few experiments using this type of inclinometer. Also,
the web and Biomch-L archives have little information regarding this type of
equipment setup. So far, current considerations are using an inclinometer
or Penny and Giles goniometer with a MEGA (ME3000P) unit. I have also
considered the Physiometer apparatus. If anyone knows of a resource, or
recent work regarding this idea, please inform me on how I can locate it.
Replies:
I think that Dai et. al, IEEE Transactions on Rehabilitation engineering,
4(2):63-72 provides a comparison of a number of types of inclinometers.
Similarily, depending upon your electronic expertise, a number of new
methods for segmental tilt are being developed. What sort of system are
you looking for?, because I am presently developing a system to measure
segmental tilt? There is a slim chance that we might be able to test the
methods on your experment.
I would look forward to hearing from you.
Richard Williamson
Department of Biomedical Engineering phone(403)492-0723
University of Alberta, Edmonton AB (403)471-2262 ext 2688
T6G 2J5 fax (403)492-8259
------------------------------------------------------------------------------
In response to your inquiries about using inclinometers ... I have done
some work using electronic inclinometers as part of a strategy to measure
in-vivo joint stiffness. One inclinometer was placed on each of the limb
segments forming the joint to be tested. The technique worked very well for
our purposes, but it required that the joint motions be restricted to planes
perpendicular to the horizon - otherwise measurement errors were introduced.
If the restriction against having a horizontal component to the motions is
acceptable, it can work well, otherwise it isn't likely to be a good choice.
To date I have only an abstract published on that work.
Pete
Peter V. Loubert PhD, PT, ATC
Associate Professor of Physical Therapy
Central Michigan University
Mount Pleasant, MI 48859 USA
Phone: 517-774-2396
Fax: 517-774-2908
Email: Peter.V.Loubert@cmich.edu
-----------------------------------------------------------------------------
A customer of ours forwarded your mail to us. In Holland we're a
salespoint for Greenleaf. One of their products is the WristSystem.
It's a produkt that can be used for recording angles in the wrist. At
the faculty of human movement sciences it's even been used for
determining those angles during wheelchair propulsion. Maybe you
could use it for your studies. Here's the adress of greenleaf:
Greenleaf Medical Systems
3145 Porter Drive
Builiding A, Suite 202
Palo Alto, California
USA
tel:+415-321-6135
If you're interested in the study with wheelchair propulsion I could
send it to you. The only thing I would need is your Postadress.
We ourselves devolop a system that's called the ADL-Monitor. Its a
small ambullant device that can collect data for 24 ours (for
example during a working day). Retrospectively the software can
determine how much the person has been walking, sitting,
standing, liying, walking stairs or even has been cycling. It hasn't
got much to do with the shoulder or wrist but you might be
interested in the devise. We've been using it (for example) to
determine wich job would be beter for a low back pain patient. It
concerned a job as a messenger and a job as a maintainance
mechanic.
Well I hope I got you interested,
Good luck with your surch on inclinometer transducers and maybe
I'll here from you
greetings,
Stefaan Visser
McRoberts BV
Raamweg 43
2596 HN
The Hague
The Netherlands
tel 31 (0)70 310 64 62
FAX 31 (0)70 361 41 03
website: http://www.mcroberts.nl
----------------------------------------------------------------------------
hi,
please visit http://idt.net/~aosi
this site is what you need.
eli
--------------------------------------------------------------------------------
There are some people in Lund Sweden (Gert-Åke Hansson,
Gert-Ake.Hansson@ymed.lu.se) who have developed a portable inclinometer with
data logger to measure arm, back and head inclinations. The one problem is
you cannot measure the postures where the movements are perpendicular to
gravity. The also have systems for EMG and goniometers.
There is also a company in Vermont (Microstrain, www.microstrain.com) that
makes several devices which may be adaptable for your purpose. They have a
FAS-A Inclinometer Accelerometer Based Flexion Angle System and a 3DM Solid
State 3-axis Pitch, Roll, & Yaw Sensor for body tracking. The president of
the company is Steve Arms, and I think they may be able to adapt some of
their systems for you purpose.
With respect to goniometry, besides the Penny and Giles (now Biometrics)
there is a small company in California (Greenleaf Medical, Palo Alto, CA;
(650) 321-6135) that makes a goniometer attached to a fingerless glove
(called the WristSystem). There are certain advantages and disadvantages to
this system.
Finally, Microstrain probably has the potential to telemeterize most of the
systems (StrainLink - Multichannel, Digital Strain Transmitter) to reduce
cabling. I hope this information helps and feel free to contact me if you
need any more information.
Best of luck with your application.
Regards,
Pete Johnson
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Peter W. Johnson, Ph.D.
Phone: (206) 276-7525, Fax: (206) 328-5618
e-mail: Pete.Johnson@ErgoRsch.com
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
---------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------
A number of weeks ago I posted a question regarding the use of
inclinometers. I have included my original posting and the replies for
anyone interested. My thanks to those that replied. All responses were
very helpful and much appreciated. Although inclinometers conceptually seem
to be an ideal analysis tool, it appears that their use still has some
limitations in the subject movements allowed.
Again, thank you for your time.
Michael
--------------------------------------------------------------------------------
I am looking into the use of inclinometer transducers to obtain absolute and
relative angles (shoulder and wrist, respectively) measured in an industrial
work place setting. The aim of this setup is to remove constraints on
subject motions and the effect of different work environments (ie. field of
view limitations, environmental interference, etc.). My search of the
literature has found few experiments using this type of inclinometer. Also,
the web and Biomch-L archives have little information regarding this type of
equipment setup. So far, current considerations are using an inclinometer
or Penny and Giles goniometer with a MEGA (ME3000P) unit. I have also
considered the Physiometer apparatus. If anyone knows of a resource, or
recent work regarding this idea, please inform me on how I can locate it.
Replies:
I think that Dai et. al, IEEE Transactions on Rehabilitation engineering,
4(2):63-72 provides a comparison of a number of types of inclinometers.
Similarily, depending upon your electronic expertise, a number of new
methods for segmental tilt are being developed. What sort of system are
you looking for?, because I am presently developing a system to measure
segmental tilt? There is a slim chance that we might be able to test the
methods on your experment.
I would look forward to hearing from you.
Richard Williamson
Department of Biomedical Engineering phone(403)492-0723
University of Alberta, Edmonton AB (403)471-2262 ext 2688
T6G 2J5 fax (403)492-8259
------------------------------------------------------------------------------
In response to your inquiries about using inclinometers ... I have done
some work using electronic inclinometers as part of a strategy to measure
in-vivo joint stiffness. One inclinometer was placed on each of the limb
segments forming the joint to be tested. The technique worked very well for
our purposes, but it required that the joint motions be restricted to planes
perpendicular to the horizon - otherwise measurement errors were introduced.
If the restriction against having a horizontal component to the motions is
acceptable, it can work well, otherwise it isn't likely to be a good choice.
To date I have only an abstract published on that work.
Pete
Peter V. Loubert PhD, PT, ATC
Associate Professor of Physical Therapy
Central Michigan University
Mount Pleasant, MI 48859 USA
Phone: 517-774-2396
Fax: 517-774-2908
Email: Peter.V.Loubert@cmich.edu
-----------------------------------------------------------------------------
A customer of ours forwarded your mail to us. In Holland we're a
salespoint for Greenleaf. One of their products is the WristSystem.
It's a produkt that can be used for recording angles in the wrist. At
the faculty of human movement sciences it's even been used for
determining those angles during wheelchair propulsion. Maybe you
could use it for your studies. Here's the adress of greenleaf:
Greenleaf Medical Systems
3145 Porter Drive
Builiding A, Suite 202
Palo Alto, California
USA
tel:+415-321-6135
If you're interested in the study with wheelchair propulsion I could
send it to you. The only thing I would need is your Postadress.
We ourselves devolop a system that's called the ADL-Monitor. Its a
small ambullant device that can collect data for 24 ours (for
example during a working day). Retrospectively the software can
determine how much the person has been walking, sitting,
standing, liying, walking stairs or even has been cycling. It hasn't
got much to do with the shoulder or wrist but you might be
interested in the devise. We've been using it (for example) to
determine wich job would be beter for a low back pain patient. It
concerned a job as a messenger and a job as a maintainance
mechanic.
Well I hope I got you interested,
Good luck with your surch on inclinometer transducers and maybe
I'll here from you
greetings,
Stefaan Visser
McRoberts BV
Raamweg 43
2596 HN
The Hague
The Netherlands
tel 31 (0)70 310 64 62
FAX 31 (0)70 361 41 03
website: http://www.mcroberts.nl
----------------------------------------------------------------------------
hi,
please visit http://idt.net/~aosi
this site is what you need.
eli
--------------------------------------------------------------------------------
There are some people in Lund Sweden (Gert-Åke Hansson,
Gert-Ake.Hansson@ymed.lu.se) who have developed a portable inclinometer with
data logger to measure arm, back and head inclinations. The one problem is
you cannot measure the postures where the movements are perpendicular to
gravity. The also have systems for EMG and goniometers.
There is also a company in Vermont (Microstrain, www.microstrain.com) that
makes several devices which may be adaptable for your purpose. They have a
FAS-A Inclinometer Accelerometer Based Flexion Angle System and a 3DM Solid
State 3-axis Pitch, Roll, & Yaw Sensor for body tracking. The president of
the company is Steve Arms, and I think they may be able to adapt some of
their systems for you purpose.
With respect to goniometry, besides the Penny and Giles (now Biometrics)
there is a small company in California (Greenleaf Medical, Palo Alto, CA;
(650) 321-6135) that makes a goniometer attached to a fingerless glove
(called the WristSystem). There are certain advantages and disadvantages to
this system.
Finally, Microstrain probably has the potential to telemeterize most of the
systems (StrainLink - Multichannel, Digital Strain Transmitter) to reduce
cabling. I hope this information helps and feel free to contact me if you
need any more information.
Best of luck with your application.
Regards,
Pete Johnson
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Peter W. Johnson, Ph.D.
Phone: (206) 276-7525, Fax: (206) 328-5618
e-mail: Pete.Johnson@ErgoRsch.com
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
---------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------